Wind-shield for printing-presses.



P.-F. 00X. WIND SHIELD FOR PRINTING PRESSBS.

' APPLICATION FILED MAY 5. 1910.

Patented Apr, 4, 1911.

2 BHEE'I'B-SHEET 2.

' into the second printing mechanism to be v UNITED STATES PATENTOFFICE.

PAUL F. COX, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GOSS PRINTING PRESSCOM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

WIND-SHIELD FOR PRINTING-PRESSES.

Specification of Letters Patent.

Patented Apr. 4, 1911.

Application filed May 5, 1910. Serial No. 559,469.

To all whom it may concern:

Be it known that I, PAUL F. Cox, a citizen of the United States,residing atChicago, in the county of Cook, State of Illinois, haveinvented certain new and useful Improvements in Wind-Shields for Printing-Presses, of which the following is a specification, ref erencebeing had to the accompanying draw- I Iy invention relates toweb-perfecting printing presses and particularly to the type ofweb-perfecting printing presses in which the web is printed upon bothsides by means of traveling impression cylinders which move backward andforward over stationary type beds, and its objectis to provide a meansby which the web may be protected from breakage from the wind which isproduced by the travel of the impression cylinders. In presses of thisgeneral type, as is well known, the web after being print ed upon oneside is led by means of rollers printed upon the other side, and, in sobeing led, the web forms a loop or pocket which incloses one of the typebeds upon three sides. The result is that when the impression cylinder,so partially inclosed by the web, travels forward toward the loop orpocket of the web, it drives the air ahead of it producing a windagainst the inclosing loop or pocket of the web; that is to say, itforces the air ahead of it against the par tially surrounding web.Particularly when the press is worked at considerable speed this wind orforcing of air ahead of the impression cylinder into the pocket of theweb, causes breaks of the web.

It is the object, therefore, of my invention toprovide a means by whichthe web may be shielded from the wind action and breakages consequentthereon.

In the drawings,-Figure 1 is a side elevation representingdiagrammatically such parts of such a press as may be necessary tounderstand my invention, the inking mechanism and operating features ofthe press being'omitted; and Fig. 2 is a similar view, but showing theimpression cylinders in the opposite position.

Referring to the drawings, 2 represents the bed or frame of the pressupon which are mounted type-beds 3-4.

5 indicates a traveling carriage which is mounted upon the framework 2so as to reciprocate forward and backward therein. This carriage may beworked by any suitable mechanism and in any well-known way. As suchmechanisms for operating a carriage are well known they will be readilyunderstood, and are omitted from the drawing because they form nopart ofmy present invention and in order not to encumber the drawings withunnecessary illustration of parts. They are well understood and milky besupplied by any one skilled in the ar 67 indicate impression cylinders,of the well known type and description, which are mounted upon, andcarried by, the carriage 5. These impression cylinders may be of anywell known type and operated in any well known manner to cause the webto be printed first upon one side and then upon the other. As the meansfor operating these impression cylinders to co-act with the typebeds maybe of any appropriate kind, and form no part of my present invention,and will be readily understood by any one skilled in the art, withoutillustration or further description, I have omitted them from thedrawing in order not to encumber it with unnecessary illustration ofwell understood parts. The inking mechanisms are not shown orillustrated for the same reason.

9-1011 and 12 indicate rollers which are mounted respectively uponsuitable arms, as 13-14-15 and 16, on the carrlage 5.

17-18*1920-21-22-23 indicate rollers which are mounted in the framework2.

24 25 indicate feed-rollers, diagrammatically illustrated, for feedingthe web forward.

26 indicates any suitable looping device, preferably of the kind shownand described in a separate application for Letters Patent of the UnitedStates, Ser. No. 559,467, but which may be of any other well known kind,description and method of operating) which serves to loop the web inorder to take up and give out the web during the operation of the press,in the well known manner characteristic of such presses. Forming no partof my present invention, it may be of any well known kind anddescription, and will be readily understood by any one skilled in theart without any further illustration and description.

A indicates the web which is fed into the press, in the form in whichthe press is shown in the drawing, from any suitable roll of paper, notshown, and enters the press in the direction of the arrow. The webpassing over roller 19 and over the looping device 26, passes overroller 9, under impression cylinder 7, and between it and type-bed 4,over roller 10, under and partially around roller 21, over rollers 22and 11, under impression cylinder 6, and between it and type-bed 3, overroller 12, again around the looping device, and between feed-rollers 24and 25 by which it is fed forward into any suitable folding ordelivering mechanism, not shown.

27 indicates a windshield formed of'a strip of suitable material such ascanvas, or the like, of a width substantially the width of the web A.One end of the strip is suitably secured to bracket 15, as by means of acrossbar 28. This wind-shield 27 is led around rollers 23, 20, 18 and 17to a winding roller 29, mounted upon a suitable bracket, as 30, 011 thecarriage 5. The end is wound around the winding roller 29, which may beoperated in any well known manner, so as to suitably tighten thewind-shield. hen the impression cylinder 6, which, in the form of pressshown, is the one which moves toward the pocket formed by the web, ad'-vances the wind-shield 27, carried by the traveling carriage, will moveover the rollers 17, 18, 20 and 23 and interpose a constant shieldbetween the advancing cylinder 6 and the pocket formed by the web A, andwill receive the force of the air moved ahead of the cylinder so as toprevent its being forced against the web and preventing breakages of theweb.

The wind-shield being formed of canvas, or other suitable strongmaterial, is, of course, strong enough to resist the force of the air,or wind, caused by the cylinder advancing toward the pocket and the windescapes out from the open sides without being brought into contact withthe web.

That which I claim as my invention, and desire to secure by LettersPatent, is,-

1. In a traveling impression-cylinder webperfecting press, in which theweb in being perfected forms a pocket, in combina tic-n, a slidingcarriage, an impression cylinder mounted thereon, and a wind-shieldconsisting of a flexible curtain operated by said carriage to beconstantly between said impression cylinder and the pocket of the web.

2. In a traveling impressioncylinder webperfecting press, in which theweb in being perfected is led from one cylinder to the other in such away as to form a pocket t0- ward which one of said cylinders moves inthe course of its travel, a windshield consisting of a flexible curtainoperated by the movement of one impression-cylinder so as to beconstantly interposed between said cylinder and the pocket of the web assaid cylinder travels toward said pocket. i

3. In a traveling impression-cylinder webperfecting press, in which theweb in being perfected is led from one printing couple to the other insuch a way as to form a pocket toward which one of the impressioncylinders travels in the course of its movement, in combination areciprocating carriage, an impression cylinder mounted on said carriage,rollers, and a flexible curtain passed around said rollers and connectedat each end to said carriage and adapted with the movement of saidcarriage to be constantly interposed between the pocket of the web andsaid impression-cylinder as the same travels toward said pocket.

PAUL F. COX.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

